Phone Is Jammed 1 - Nokia NPL-4 Series Troubleshooting Instructions

NPL-4/5/RM-104
Troubleshooting Instructions

Phone is jammed 1

Phone is jammed
Measure VIO, VCORE,
VFLASH1, VANA,
VR3 voltages.
Are they OK ?
Yes
Measure 32kHz
SleepClk from testpoint J404.
Is it OK ?
Yes
Measure 26MHz
RFClk from R420.
Is it OK ?
Yes
Measure PURX signal
from testpoint J402.
Is it HIGH (1.8V) ?
Yes
Phone is
jammed
2
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Check VBATT1-7
VIO,VCORE,VFLASH1,VANA,
No
VR3 lines.
Are they OK ?
Measure 32kHz
SleepClkfrom B200.
No
Is it OK ?
Measure 26MHz
RFCLK from G501 out.
No
Is it OK ?
No
Nokia Customer Care
Check L260-265,
L206, C260-265,
No
Check BSI/BTEMP
Yes lines. If OK, change
Check B200,C209,
No
Yes Change UEMEk
No
If OK change G501
Check R420, C420.
Yes
If OK change N500
Change UEMEk
C283, C295
UEMEk
C210
Check C574,
R520,C540.
Issue 2 05/05